2,404 research outputs found

    Vapor grown silicon dioxide improves transistor base-collector junctions

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    Vapor grown silicon dioxide layer protects base-collector junction in silicon planar transistors during the emitter diffusion process. This oxide fills in any imperfections that exist in the thermally grown oxide layer and is of greater thickness than that layer. This process is used to deposit protective silicon dioxide coatings on optical surfaces

    Integrated metal transistor leads

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    Technique that makes the metal leads integral to the transistor wafer and reduces capacitance in the device, thereby increasing its efficiency is outlined

    Emphasizing Year-Round Physical Activity of Seniors in Vergennes, Vermont

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    Many senior citizens in the Vergennes community are active in the spring, summer, and fall with various activities, community groups, and walking. However, in the winter with colder temperatures and less sunlight, these activities are difficult to maintain, even more exacerbated by the current Covid-19 pandemic. Encouraging maintenance of physical activity throughout the winter months in Vermont is difficult, but can provide many benefits to these individuals both physically and mentally.https://scholarworks.uvm.edu/fmclerk/1677/thumbnail.jp

    Trans*forming College Classrooms into Gender-Inclusive Spaces: A Case Study Amplifying Transgender Students’ Voices

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    This qualitative, multiple case study examined the factors that affect classroom experiences of trans* college students in the United States pursuing associate, bachelor’s, master’s, or doctoral degrees. Participants included 19 students with a variety of trans identities attending various institutions across the United States. I conducted initial interviews with each participant at the beginning of the spring 2021 semester, collected monthly written reflections throughout the semester, and conducted a final interview with each participant at the end of the term. This study was conducted during the COVID-19 pandemic, and thus, interviews were conducted virtually. I used open coding to analyze the interview transcripts and reflections, then identified categories and themes. Analysis revealed five themes: Navigating gender identity, the power of language, the trans* tax, the (mis)education of sex and gender, and community. I interpreted the findings using Bronfenbrenner’s (1976) ecological systems theory and queer theory. This study provides many recommendations to stakeholders, including instructors, institutions of higher education, students, families, and more

    The Biology of fun: Do birds just want to have a good time?

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    The intention of this research project was to delve into the ecological study of playfulness and what appears to be fun in a broad range of bird species. (1) Do all birds exhibit playfulness and use fun? And if so, (2) how have these behaviors contributed to their evolutionary success? Past research has already been underway to biological define what constitutes both “fun” and “play” in animal species. In the past the majority of all test subjects have been mammals, however in the past decade (and especially in the past five years) other vertebrate species such as birds are beginning to be observed as well. The research is still in progress but it seems very obvious from studies so far have concluded that various aviary species do in fact exhibit playful behavior and have fun. Recent hypotheses regarding play in birds, how common it is among various species, and what species have yet to be studied were topics covered in the research. In essence a variety of species of birds are already confirmed to exhibit play behaviors and are used primarily to establish social connects, social hierarchies, and hone predatory and other survival skills.https://scholarscompass.vcu.edu/uresposters/1195/thumbnail.jp

    BIOH 480.80: Teaching Anatomy and Physiology I (Honors)

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    Differential Diagnosis of Abnormal Muscle Gross Anatomy of a Male Cadaver

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    The ability of healthcare providers to carefully consider all presentations of illness and injury, draw upon research and knowledge to develop a list of potential diagnoses, and further investigate systems expected to be impacted by these diagnoses, is crucial for accurate identification of a condition and subsequent treatment plans to improve the welfare of patients. In order to determine a possible cause for unusual anatomic changes in multiple regions of the male cadaver used in the University of Montana’s Anatomy and Physiology lab, we performed a differential diagnosis.This research is exempt from IRB approval because the individual is no longer living. Permission was obtained from the Montana Body donation program. To generate preliminary diagnoses, we identified possible conditions associated with our initial observations of the abnormalities in the lower extremities. Further dissections of the colon, the femoral artery, and the heart were completed to evaluate the involvement of the cardiovascular and digestive systems after detecting distension of the lower intestine and a suture in the artery. We noted evidence of renal and vascular disease, prompting additional dissection of the kidneys and brain. Comprehensive assessment of the observed indications, in conjunction with subsequent research into the demographic information related to each preliminary diagnosis, supported the conclusion that stroke as a result of chronic kidney disease and atherosclerosis was the cause of death of the cadaver. This project is highly relevant in the healthcare industry as chronic kidney disease is a global health threat affecting approximately 10% of the adult population, and comorbidities are seldom investigated (Lee et al.) Additionally, the use of cadaver research, as demonstrated in this project, is an invaluable opportunity to those in and entering the medical field to enhance the comprehension of anatomy, physiology, and pathology during the educational process by allowing for the practical application of learned concepts and skills

    A New Model for Predicting the Drag and Lift Forces of Turbulent Newtonian Flow on Arbitrarily Shaped Shells on the Seafloor

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    Currently, all forecasts of currents, waves, and seafloor evolution are limited by a lack of fundamental knowledge and the parameterization of small-scale processes at the seafloor-ocean interface. Commonly used Euler-Lagrange models for sediment transport require parameterizations of the drag and lift forces acting on the particles. However, current parameterizations for these forces only work for spherical particles. In this dissertation we propose a new method for predicting the drag and lift forces on arbitrarily shaped objects at arbitrary orientations with respect to the direction of flow that will ultimately provide models for predicting the sediment sorting processes that lead to the variability of shell fragments on inner shelf seafloors. We wish to develop the drag force parameterization specifically for a limpet shell through the linear regression of force estimated from high-fidelity Reynolds-averaged Navier-Stokes (RANS) simulations in OpenFOAM
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